The O'Brien Black Magic is probably the best “family” kneeboard on the market. Featuring their famous cable-actuated retractable fin system and the aquatic hook make the Black Magic the perfect board for successfully teaching kids and newbie riders the finer points of deep-water kneeboard starts. The size of the Black Magic means adults and kids can ride it with ease. The smooth bottom contour makes it super stable and extremely comfortable. The 3-inch padded strap provides a secure fit.